Decrease of thyroid hormones in patients with familial hypercholesterolemia during dextran sulphate low-density lipoprotein apheresis

Removal of low-density lipoproteins from plasma by dextran sulfate adsorption (DSA) in FH patients entails a decrease in plasma levels of thyroid hormones (?28.5% and ?18.7%, respectively, for T3 and T4). This suggests that FH patients have a greater than normal fraction of thyroid hormones bound to lipoproteins, due to their expanded lipoprotein pool.